Noun envoy has 3 senses
  1. envoy, envoy extraordinary, minister plenipotentiary - a diplomat having less authority than an ambassador
    --1 is a kind of diplomat, diplomatist
  2. emissary, envoy - someone sent on a mission to represent the interests of someone else
    --2 is a kind of representative
    --2 has particulars: legate, official emissary
  3. envoy, envoi - a brief stanza concluding certain forms of poetry
    --3 is a kind of stanza